Storage controller, memory management method and storage device

Abstract

The disclosure discloses a storage controller, a memory management method, and a storage device, the memory management method including: identifying a current power mode of a host system; obtaining a target command from a command queue; in response to determining that the target command is used to enable a write booster mode, determining whether the power mode is a highest level; in response to determining that the power mode is the highest level, determining whether a cache block currently in use is a physical block of a triple-level cell type; in response to determining that the cache block currently in use belongs to the triple-level cell type, freezing the cache block of the triple-level cell type; using a physical block of a single-level cell type as a new cache block to write cache data; and enabling the write booster mode, and sending an enabling completed response.